gcc/libstdc++-v3/libsupc++/eh_alloc.cc

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// -*- C++ -*- Allocate exception objects.
// Copyright (C) 2001-2016 Free Software Foundation, Inc.
//
// This file is part of GCC.
//
// GCC is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3, or (at your option)
// any later version.
//
// GCC is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
// This is derived from the C++ ABI for IA-64. Where we diverge
// for cross-architecture compatibility are noted with "@@@".
#include <bits/c++config.h>
#include <cstdlib>
#if _GLIBCXX_HOSTED
#include <cstring>
#endif
#include <climits>
#include <exception>
#include "unwind-cxx.h"
atomicity.h: Move to... 2006-09-13 Benjamin Kosnik <bkoz@redhat.com> * include/bits/atomicity.h: Move to... * include/ext/atomicity.h: ...here. * include/bits/concurrence.h: Move to... * include/ext/concurrence.h: ...here. * include/Makefile.am (ext_headers): Additions. (bits_headers): Subtractions. * include/Makefile.in: Regenerate. * include/ext/bitmap_allocator.h (_Mutex), __threads_enabled, _Lock, _Auto_Lock): Subsume into... * include/bits/concurrence.h (__mutex): ..this. Error check locking and unlocking. (lock): Uglify to... (__scoped_lock): Use __mutex. (__glibcxx_mutex_define_initialized): Remove. (__glibcxx_mutex_type): Remove. * include/tr1/boost_shared_ptr.h: Formating tweaks, adjustments. (_Lock_policy): Move from here... * include/ext/concurrence.h: ... to here. (__shared_ptr_default_lock_mode): To __default_lock_policy. (_S_lockfree): To _S_atomic. Document. * libsupc++/guard.cc (static_mutex): Subsume into and fixup for... * include/ext/concurrence.h (__recursive_mutex): ...this. Error check locking and unlocking. * libsupc++/eh_alloc.cc: Use __scoped_lock. * config/os/aix/atomicity.h: Fixups for include paths, mutex to __scoped_mutex change, removal of locking defines. * config/os/irix/atomicity.h: Same. * config/cpu/cris/atomicity.h: Same. * config/cpu/m68k/atomicity.h: Same. * config/cpu/hppa/atomicity.h: Same. * config/cpu/mips/atomicity.h: Same. * config/cpu/sparc/atomicity.h: Same. * config/cpu/i386/atomicity.h: Same. * config/cpu/i486/atomicity.h: Same. * config/cpu/sh/atomicity.h: Same. * config/cpu/generic/atomicity_mutex/atomicity.h: Same. * include/ext/pool_allocator.h: Same. * include/ext/bitmap_allocator.h: Same. * include/ext/rc_string_base.h: Same. * include/ext/mt_allocator.h: Same. * include/bits/locale_classes.h: Same. * include/bits/basic_string.h: Same. * include/bits/ios_base.h: Same. * include/tr1/memory: Same. * src/pool_allocator.cc: Same. * src/mt_allocator.cc: Same. * src/locale_init.cc: Same. * src/ios.cc: Same. * src/locale.cc: Same. * src/bitmap_allocator.cc: Same. * src/ios_init.cc: Same. * src/debug.cc: Same. From-SVN: r116942
2006-09-14 11:48:15 +02:00
#include <ext/concurrence.h>
#include <new>
#if _GLIBCXX_HOSTED
using std::free;
using std::malloc;
using std::memset;
#else
c++config: Add in revised namespace associations. 2005-12-18 Benjamin Kosnik <bkoz@redhat.com> * include/bits/c++config: Add in revised namespace associations. _GLIBCXX_BEGIN_NAMESPACE: New macro. _GLIBCXX_END_NAMESPACE: Same. _GLIBCXX_BEGIN_NESTED_NAMESPACE: Same. _GLIBCXX_END_NESTED_NAMESPACE: Same. * acinclude.m4 (GLIBCXX_ENABLE_SYMVERS]): Add gnu-versioned-namespace. * configure: Regenerated. * config.h.in: Same. * config/abi/pre/gnu-versioned-namespace.ver: New. * config/abi/pre/gnu.ver (GLIBCXX_3.4.7): Add exports for nested debug mode items. * include/Makefile.am (${host_builddir}/c++config.h): Fill in values for __GLIBCXX__ and _GLIBCXX_NAMESPACE_ASSOCIATION_VERSION. * include/Makefile.in: Regnerate. * src/compatibility.cc: Alias new, nested definitions to exported symbols from non-nested __gnu_debug. * src/Makefile.am: Add in ENABLE_SYMVERS_GNU_NAMESPACE. * src/Makefile.in: Regenerate. * docs/html/debug_mode.html: Revise for nested design. * docs/html/debug.html: Use debug qualifications instead of __gnu_debug. * docs/html/configopts.html: Revise documentation for --enable-symvers. * include/debug/formatter: Simplify namespace qualifications for current, nested-only reality. Add top-level namespace alias, namespace debug, for debug-mode containers. * include/debug/safe_iterator.h: Same. * include/debug/set.h: Same. * include/debug/hash_multimap.h: Same. * include/debug/hash_set.h: Same. * include/debug/bitset * include/debug/safe_sequence.h: Same. * include/debug/multiset.h: Same. * include/debug/safe_base.h: Same. * include/debug/functions.h: Same. * include/debug/safe_iterator.tcc * include/debug/hash_multiset.h: Same. * include/debug/vector * include/debug/map.h: Same. * include/debug/deque * include/debug/hash_map.h: Same. * include/debug/string * include/debug/macros.h: Same. * include/debug/list * include/debug/debug.h: Same. * include/debug/multimap.h: Same. * src/debug.cc: Same. * testsuite/23_containers/vector/invalidation/1.cc: Cleanups. * testsuite/23_containers/vector/invalidation/2.cc: Same. * testsuite/23_containers/vector/invalidation/3.cc: Same. * testsuite/23_containers/vector/invalidation/4.cc: Same. * testsuite/23_containers/deque/invalidation/1.cc: Same. * testsuite/23_containers/deque/invalidation/2.cc: Same. * testsuite/23_containers/deque/invalidation/3.cc: Same. * testsuite/23_containers/deque/invalidation/4.cc: Same. * testsuite/23_containers/multiset/invalidation/1.cc: Same. * testsuite/23_containers/multiset/invalidation/2.cc: Same. * testsuite/23_containers/multimap/invalidation/1.cc: Same. * testsuite/23_containers/multimap/invalidation/2.cc: Same. * testsuite/23_containers/bitset/invalidation/1.cc: Same. * testsuite/23_containers/bitset/cons/16020.cc: Same. * testsuite/23_containers/bitset/operations/13838.cc: Same. * testsuite/23_containers/list/invalidation/1.cc: Same. * testsuite/23_containers/list/invalidation/2.cc: Same. * testsuite/23_containers/list/invalidation/3.cc: Same. * testsuite/23_containers/list/invalidation/4.cc: Same. * testsuite/23_containers/set/invalidation/1.cc: Same. * testsuite/23_containers/set/invalidation/2.cc: Same. * testsuite/23_containers/map/invalidation/1.cc: Same. * testsuite/23_containers/map/invalidation/2.cc: Same. * testsuite/23_containers/map/insert/16813.cc: Same. * include/bits/basic_ios.h: Use _GLIBCXX_BEGIN_NAMESPACE(std) and friends. * include/bits/stl_list.h: Same. * include/bits/stl_map.h: Same. * include/bits/stl_algobase.h: Same. * include/bits/localefwd.h: Same. * include/bits/valarray_array.tcc: Same. * include/bits/valarray_after.h: Same. * include/bits/gslice_array.h: Same. * include/bits/stl_queue.h: Same. * include/bits/gslice.h: Same. * include/bits/locale_facets.tcc: Same. * include/bits/locale_classes.h: Same. * include/bits/stl_set.h: Same. * include/bits/locale_facets.h: Same. * include/bits/stl_stack.h: Same. * include/bits/stl_iterator_base_types.h: Same. * include/bits/stl_heap.h: Same. * include/bits/indirect_array.h: Same. * include/bits/atomicity.h: Same. * include/bits/stream_iterator.h: Same. * include/bits/concurrence.h: Same. * include/bits/basic_string.h: Same. * include/bits/stl_multimap.h: Same. * include/bits/stl_pair.h: Same. * include/bits/basic_ios.tcc: Same. * include/bits/stl_raw_storage_iter.h: Same. * include/bits/stl_vector.h: Same. * include/bits/stl_numeric.h: Same. * include/bits/ios_base.h: Same. * include/bits/stl_deque.h: Same. * include/bits/istream.tcc: Same. * include/bits/postypes.h: Same. * include/bits/stl_multiset.h: Same. * include/bits/mask_array.h: Same. * include/bits/stl_uninitialized.h: Same. * include/bits/ostream.tcc: Same. * include/bits/slice_array.h: Same. * include/bits/boost_concept_check.h: Same. * include/bits/sstream.tcc: Same. * include/bits/stl_iterator_base_funcs.h: Same. * include/bits/char_traits.h: Same. * include/bits/stl_algo.h: Same. * include/bits/stringfwd.h: Same. * include/bits/c++config * include/bits/stl_iterator.h: Same. * include/bits/valarray_array.h: Same. * include/bits/stl_tempbuf.h: Same. * include/bits/vector.tcc: Same. * include/bits/deque.tcc: Same. * include/bits/stl_bvector.h: Same. * include/bits/basic_string.tcc: Same. * include/bits/list.tcc: Same. * include/bits/streambuf_iterator.h: Same. * include/bits/valarray_before.h: Same. * include/bits/stl_construct.h: Same. * include/bits/stl_function.h: Same. * include/bits/cpp_type_traits.h: Same. * include/bits/streambuf.tcc: Same. * include/bits/allocator.h: Same. * include/bits/stl_tree.h: Same. * include/bits/fstream.tcc: Same. * include/bits/stl_relops.h: Same. * include/bits/functexcept.h: Same. * include/std/std_valarray.h: Same. * include/std/std_iostream.h: Same. * include/std/std_streambuf.h: Same. * include/std/std_bitset.h: Same. * include/std/std_iosfwd.h: Same. * include/std/std_iomanip.h: Same. * include/std/std_fstream.h: Same. * include/std/std_limits.h: Same. * include/std/std_stdexcept.h: Same. * include/std/std_istream.h: Same. * include/std/std_complex.h: Same. * include/std/std_memory.h: Same. * include/std/std_ostream.h: Same. * include/std/std_sstream.h: Same. * include/c_std/std_csignal.h: Same. * include/c_std/std_cstdlib.h: Same. * include/c_std/std_cstdio.h: Same. * include/c_std/std_cstdarg.h: Same. * include/c_std/std_cctype.h: Same. * include/c_std/std_cmath.h: Same. * include/c_std/std_ctime.h: Same. * include/c_std/std_clocale.h: Same. * include/c_std/std_csetjmp.h: Same. * include/c_std/std_cwchar.h: Same. * include/c_std/std_cstring.h: Same. * include/c_std/std_cstddef.h: Same. * include/c_std/std_cwctype.h: Same. * include/backward/iterator.h: Same. * include/backward/set.h: Same. * include/backward/hashtable.h: Same. * include/backward/fstream.h: Same. * include/backward/tempbuf.h: Same. * include/backward/istream.h: Same. * include/backward/bvector.h: Same. * include/backward/stack.h: Same. * include/backward/rope.h: Same. * include/backward/complex.h: Same. * include/backward/ostream.h: Same. * include/backward/heap.h: Same. * include/backward/iostream.h: Same. * include/backward/function.h: Same. * include/backward/multimap.h: Same. * include/backward/pair.h: Same. * include/backward/stream.h: Same. * include/backward/iomanip.h: Same. * include/backward/strstream * include/backward/slist.h: Same. * include/backward/tree.h: Same. * include/backward/vector.h: Same. * include/backward/deque.h: Same. * include/backward/multiset.h: Same. * include/backward/list.h: Same. * include/backward/map.h: Same. * include/backward/algobase.h: Same. * include/backward/hash_map.h: Same. * include/backward/algo.h: Same. * include/backward/queue.h: Same. * include/backward/streambuf.h: Same. * src/allocator-inst.cc: Same. * src/complex_io.cc: Same. * src/localename.cc: Same. * src/limits.cc: Same. * src/ios_failure.cc: Same. * src/locale-misc-inst.cc: Same. * src/streambuf-inst.cc: Same. * src/misc-inst.cc: Same. * src/concept-inst.cc: Same. * src/ios_locale.cc: Same. * src/pool_allocator.cc: Same. * src/fstream-inst.cc: Same. * src/istream-inst.cc: Same. * src/string-inst.cc: Same. * src/locale_init.cc: Same. * src/ctype.cc: Same. * src/strstream.cc: Same. * src/ostream-inst.cc: Same. * src/functexcept.cc: Same. * src/streambuf.cc: Same. * src/sstream-inst.cc: Same. * src/ios.cc: Same. * src/valarray-inst.cc: Same. * src/locale.cc: Same. * src/tree.cc: Same. * src/stdexcept.cc: Same. * src/istream.cc: Same. * src/compatibility.cc: Same. * src/locale-inst.cc: Same. * src/globals_io.cc: Same. * src/list.cc: Same. * src/ios_init.cc: Same. * src/locale_facets.cc: Same. * src/codecvt.cc: Same. * include/tr1/unordered_map: Use _GLIBCXX_BEGIN_NAMESPACE(tr1). * include/tr1/boost_shared_ptr.h: Same. * include/tr1/tuple * include/tr1/hashtable * include/tr1/type_traits_fwd.h: Same. * include/tr1/unordered_set * include/tr1/functional * include/tr1/ref_fwd.h: Same. * include/tr1/utility * include/tr1/type_traits * include/tr1/array * include/ext/hashtable.h: Use _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx). * include/ext/typelist.h: Same. * include/ext/hash_map: Same. * include/ext/rc_string_base.h: Same. * include/ext/pool_allocator.h: Same. * include/ext/iterator: Same. * include/ext/rb_tree: Same. * include/ext/numeric: Same. * include/ext/vstring.tcc: Same. * include/ext/sso_string_base.h: Same. * include/ext/stdio_filebuf.h: Same. * include/ext/algorithm: Same. * include/ext/codecvt_specializations.h: Same. * include/ext/new_allocator.h: Same. * include/ext/array_allocator.h: Same. * include/ext/vstring_util.h: Same. * include/ext/vstring_fwd.h: Same. * include/ext/mt_allocator.h: Same. * include/ext/debug_allocator.h: Same. * include/ext/slist: Same. * include/ext/stdio_sync_filebuf.h: Same. * include/ext/hash_fun.h: Same. * include/ext/malloc_allocator.h: Same. * include/ext/functional: Same. * include/ext/bitmap_allocator.h: Same. * include/ext/pod_char_traits.h: Same. * include/ext/vstring.h: Same. * include/ext/ropeimpl.h: Same. * include/ext/hash_set: Same. * include/ext/memory: Same. * include/ext/rope: Same. * include/bits/boost_concept_check.h: Same. * include/bits/stl_iterator.h: Same. * include/bits/char_traits.h: Same. * include/bits/cpp_type_traits.h: Same. * include/bits/concurrence.h: Same. * include/bits/atomicity.h: Same. * config/locale/gnu/numeric_members.cc: Same. * config/locale/gnu/collate_members.cc: Same. * config/locale/gnu/ctype_members.cc: Same. * config/locale/gnu/c_locale.cc: Same. * config/locale/gnu/codecvt_members.cc: Same. * config/locale/gnu/messages_members.cc: Same. * config/locale/gnu/c_locale.h: Same. * config/locale/gnu/monetary_members.cc: Same. * config/locale/gnu/time_members.cc: Same. * config/locale/ieee_1003.1-2001/c_locale.h: Same. * config/locale/generic/numeric_members.cc: Same. * config/locale/generic/collate_members.cc: Same. * config/locale/generic/ctype_members.cc: Same. * config/locale/generic/c_locale.cc: Same. * config/locale/generic/codecvt_members.cc: Same. * config/locale/generic/messages_members.cc: Same. * config/locale/generic/c_locale.h: Same. * config/locale/generic/monetary_members.cc: Same. * config/locale/generic/time_members.cc: Same. * config/os/aix/atomicity.h: Same. * config/os/irix/atomicity.h: Same. * config/cpu/powerpc/atomicity.h: Same. * config/cpu/cris/atomicity.h: Same. * config/cpu/ia64/atomicity.h: Same. * config/cpu/alpha/atomicity.h: Same. * config/cpu/m68k/atomicity.h: Same. * config/cpu/hppa/atomicity.h: Same. * config/cpu/mips/atomicity.h: Same. * config/cpu/sparc/atomicity.h: Same. * config/cpu/i386/atomicity.h: Same. * config/cpu/i486/atomicity.h: Same. * config/cpu/sh/atomicity.h: Same. * config/cpu/generic/atomicity.h: Same. * config/cpu/s390/atomicity.h: Same. * config/io/c_io_stdio.h: Same. * config/io/basic_file_stdio.cc: Same. * config/io/basic_file_stdio.h: Same. * src/misc-inst.cc: Same. * src/concept-inst.cc: Same. * src/ext-inst.cc: Same. * src/string-inst.cc: Same. * src/pool_allocator.cc: Same. * src/bitmap_allocator.cc: Same. * src/mt_allocator.cc: Same. * libsupc++/exception: Same. * libsupc++/vterminate.cc: Same. * testsuite/ext/hash_map/1.cc: Explicitly qualify __gnu_cxx::hash_map. * testsuite/ext/hash_map/14648.cc: Same. * libsupc++/eh_alloc.cc: Correct comment line spacing. From-SVN: r108775
2005-12-19 01:56:05 +01:00
// In a freestanding environment, these functions may not be available
// -- but for now, we assume that they are.
extern "C" void *malloc (std::size_t);
extern "C" void free(void *);
extern "C" void *memset (void *, int, std::size_t);
#endif
using namespace __cxxabiv1;
// ??? How to control these parameters.
// Guess from the size of basic types how large a buffer is reasonable.
// Note that the basic c++ exception header has 13 pointers and 2 ints,
// so on a system with PSImode pointers we're talking about 56 bytes
// just for overhead.
#if INT_MAX == 32767
# define EMERGENCY_OBJ_SIZE 128
# define EMERGENCY_OBJ_COUNT 16
#elif !defined (_GLIBCXX_LLP64) && LONG_MAX == 2147483647
# define EMERGENCY_OBJ_SIZE 512
# define EMERGENCY_OBJ_COUNT 32
#else
# define EMERGENCY_OBJ_SIZE 1024
# define EMERGENCY_OBJ_COUNT 64
#endif
#ifndef __GTHREADS
# undef EMERGENCY_OBJ_COUNT
# define EMERGENCY_OBJ_COUNT 4
#endif
namespace __gnu_cxx
{
void __freeres();
}
namespace
{
// A fixed-size heap, variable size object allocator
class pool
{
public:
pool();
void *allocate (std::size_t);
void free (void *);
bool in_pool (void *);
private:
struct free_entry {
std::size_t size;
free_entry *next;
};
struct allocated_entry {
std::size_t size;
char data[] __attribute__((aligned));
};
// A single mutex controlling emergency allocations.
__gnu_cxx::__mutex emergency_mutex;
// The free-list
free_entry *first_free_entry;
// The arena itself - we need to keep track of these only
// to implement in_pool.
char *arena;
std::size_t arena_size;
friend void __gnu_cxx::__freeres();
};
pool::pool()
{
// Allocate the arena - we could add a GLIBCXX_EH_ARENA_SIZE environment
// to make this tunable.
arena_size = (EMERGENCY_OBJ_SIZE * EMERGENCY_OBJ_COUNT
+ EMERGENCY_OBJ_COUNT * sizeof (__cxa_dependent_exception));
arena = (char *)malloc (arena_size);
if (!arena)
{
// If the allocation failed go without an emergency pool.
arena_size = 0;
first_free_entry = NULL;
return;
}
// Populate the free-list with a single entry covering the whole arena
first_free_entry = reinterpret_cast <free_entry *> (arena);
new (first_free_entry) free_entry;
first_free_entry->size = arena_size;
first_free_entry->next = NULL;
}
void *pool::allocate (std::size_t size)
{
__gnu_cxx::__scoped_lock sentry(emergency_mutex);
// We need an additional size_t member plus the padding to
// ensure proper alignment of data.
size += offsetof (allocated_entry, data);
// And we need to at least hand out objects of the size of
// a freelist entry.
if (size < sizeof (free_entry))
size = sizeof (free_entry);
// And we need to align objects we hand out to the maximum
// alignment required on the target (this really aligns the
// tail which will become a new freelist entry).
size = ((size + __alignof__ (allocated_entry::data) - 1)
& ~(__alignof__ (allocated_entry::data) - 1));
// Search for an entry of proper size on the freelist.
free_entry **e;
for (e = &first_free_entry;
*e && (*e)->size < size;
e = &(*e)->next)
;
if (!*e)
return NULL;
allocated_entry *x;
if ((*e)->size - size >= sizeof (free_entry))
{
// Slit block if it is too large.
free_entry *f = reinterpret_cast <free_entry *>
(reinterpret_cast <char *> (*e) + size);
std::size_t sz = (*e)->size;
free_entry *next = (*e)->next;
new (f) free_entry;
f->next = next;
f->size = sz - size;
x = reinterpret_cast <allocated_entry *> (*e);
new (x) allocated_entry;
x->size = size;
*e = f;
}
else
{
// Exact size match or too small overhead for a free entry.
std::size_t sz = (*e)->size;
free_entry *next = (*e)->next;
x = reinterpret_cast <allocated_entry *> (*e);
new (x) allocated_entry;
x->size = sz;
*e = next;
}
return &x->data;
}
[multiple changes] 2008-08-23 Paolo Carlini <paolo.carlini@oracle.com> * testsuite/lib/libstdc++.exp (check_v3_target_atomic_builtins): Add. * testsuite/lib/dg-options.exp (dg-require-atomic-builtins): Likewise. * testsuite/18_support/exception_ptr/current_exception.cc: Use it. * testsuite/18_support/exception_ptr/rethrow_exception.cc: Likewise. * testsuite/18_support/exception_ptr/lifespan.cc: Likewise. 2008-08-23 Sebastian Redl <sebastian.redl@getdesigned.at> Add (again) exception propagation support as per N2179. Feature is available only when _GLIBCXX_ATOMIC_BUILTINS_4 is defined. * libsupc++/exception_ptr.h (exception_ptr, current_exception, copy_exception, rethrow_exception): New file, implement exception propagation. * libsupc++/eh_ptr.cc (exception_ptr, current_exception, rethrow_exception, __gxx_dependent_exception_cleanup): Likewise. * libsupc++/unwind-cxx.h (__cxa_exception): Add reference count. (__cxa_dependent_exception, __cxa_allocate_dependent_exception, __cxa_free_dependent_exception, __get_dependent_exception_from_ue, __GXX_INIT_DEPENDENT_EXCEPTION_CLASS, __is_dependent_exception, __gxx_dependent_exception_class, __get_object_from_ue, __get_object_from_ambiguous_exception): Add. (__GXX_INIT_EXCEPTION_CLASS, __gxx_exception_class): Rename. (__is_gxx_exception_class): Handle dependent exceptions. * libsupc++/eh_arm.cc (__cxa_type_match): Likewise. * libsupc++/eh_call.cc (__cxa_call_unexpected): Likewise. * libsupc++/eh_personality.cc (__gxx_personality_*): Likewise. * libsupc++/eh_type.cc (__cxa_current_exception_type): Likewise. * libsupc++/eh_alloc.cc (__cxa_allocate_dependent_exception, __cxa_free_dependent_exception): Add. * libsupc++/eh_throw.cc (__gxx_exception_cleanup): Handle reference counting. * libsupc++/exception: Conditionally include exception_ptr.h. * libsupc++/Makefile.am: Register new files. * libsupc++/Makefile.in: Regenerate. * config/abi/pre/gnu.ver: Add new symbols. * testsuite/18_support/exception_ptr/current_exception.cc: Test the core functionality of current_exception(). * testsuite/18_support/exception_ptr/rethrow_exception.cc: Test the core functionality of rethrow_exception(). * testsuite/18_support/exception_ptr/lifespan.cc: Test the life span of exception objects during exception propagation. From-SVN: r139509
2008-08-23 13:28:30 +02:00
void pool::free (void *data)
{
__gnu_cxx::__scoped_lock sentry(emergency_mutex);
allocated_entry *e = reinterpret_cast <allocated_entry *>
(reinterpret_cast <char *> (data) - offsetof (allocated_entry, data));
std::size_t sz = e->size;
if (!first_free_entry)
{
// If the free list is empty just put the entry there.
free_entry *f = reinterpret_cast <free_entry *> (e);
new (f) free_entry;
f->size = sz;
f->next = NULL;
first_free_entry = f;
}
else if (reinterpret_cast <char *> (e) + sz
== reinterpret_cast <char *> (first_free_entry))
{
// Check if we can merge with the first free entry being right
// after us.
free_entry *f = reinterpret_cast <free_entry *> (e);
new (f) free_entry;
f->size = sz + first_free_entry->size;
f->next = first_free_entry->next;
first_free_entry = f;
}
else
{
// Else search for a free item we can merge with at its end.
free_entry **fe;
for (fe = &first_free_entry;
(*fe)->next
&& (reinterpret_cast <char *> ((*fe)->next)
> reinterpret_cast <char *> (e) + sz);
fe = &(*fe)->next)
;
if (reinterpret_cast <char *> (*fe) + (*fe)->size
== reinterpret_cast <char *> (e))
/* Merge with the freelist entry. */
(*fe)->size += sz;
else
{
// Else put it after it which keeps the freelist sorted.
free_entry *f = reinterpret_cast <free_entry *> (e);
new (f) free_entry;
f->size = sz;
f->next = (*fe)->next;
(*fe)->next = f;
}
}
}
bool pool::in_pool (void *ptr)
{
char *p = reinterpret_cast <char *> (ptr);
return (p > arena
&& p < arena + arena_size);
}
pool emergency_pool;
}
namespace __gnu_cxx
{
void
__freeres()
{
if (emergency_pool.arena)
{
::free(emergency_pool.arena);
emergency_pool.arena = 0;
}
}
}
extern "C" void *
__cxxabiv1::__cxa_allocate_exception(std::size_t thrown_size) _GLIBCXX_NOTHROW
{
void *ret;
thrown_size += sizeof (__cxa_refcounted_exception);
ret = malloc (thrown_size);
if (!ret)
ret = emergency_pool.allocate (thrown_size);
atomicity.h: Move to... 2006-09-13 Benjamin Kosnik <bkoz@redhat.com> * include/bits/atomicity.h: Move to... * include/ext/atomicity.h: ...here. * include/bits/concurrence.h: Move to... * include/ext/concurrence.h: ...here. * include/Makefile.am (ext_headers): Additions. (bits_headers): Subtractions. * include/Makefile.in: Regenerate. * include/ext/bitmap_allocator.h (_Mutex), __threads_enabled, _Lock, _Auto_Lock): Subsume into... * include/bits/concurrence.h (__mutex): ..this. Error check locking and unlocking. (lock): Uglify to... (__scoped_lock): Use __mutex. (__glibcxx_mutex_define_initialized): Remove. (__glibcxx_mutex_type): Remove. * include/tr1/boost_shared_ptr.h: Formating tweaks, adjustments. (_Lock_policy): Move from here... * include/ext/concurrence.h: ... to here. (__shared_ptr_default_lock_mode): To __default_lock_policy. (_S_lockfree): To _S_atomic. Document. * libsupc++/guard.cc (static_mutex): Subsume into and fixup for... * include/ext/concurrence.h (__recursive_mutex): ...this. Error check locking and unlocking. * libsupc++/eh_alloc.cc: Use __scoped_lock. * config/os/aix/atomicity.h: Fixups for include paths, mutex to __scoped_mutex change, removal of locking defines. * config/os/irix/atomicity.h: Same. * config/cpu/cris/atomicity.h: Same. * config/cpu/m68k/atomicity.h: Same. * config/cpu/hppa/atomicity.h: Same. * config/cpu/mips/atomicity.h: Same. * config/cpu/sparc/atomicity.h: Same. * config/cpu/i386/atomicity.h: Same. * config/cpu/i486/atomicity.h: Same. * config/cpu/sh/atomicity.h: Same. * config/cpu/generic/atomicity_mutex/atomicity.h: Same. * include/ext/pool_allocator.h: Same. * include/ext/bitmap_allocator.h: Same. * include/ext/rc_string_base.h: Same. * include/ext/mt_allocator.h: Same. * include/bits/locale_classes.h: Same. * include/bits/basic_string.h: Same. * include/bits/ios_base.h: Same. * include/tr1/memory: Same. * src/pool_allocator.cc: Same. * src/mt_allocator.cc: Same. * src/locale_init.cc: Same. * src/ios.cc: Same. * src/locale.cc: Same. * src/bitmap_allocator.cc: Same. * src/ios_init.cc: Same. * src/debug.cc: Same. From-SVN: r116942
2006-09-14 11:48:15 +02:00
if (!ret)
std::terminate ();
memset (ret, 0, sizeof (__cxa_refcounted_exception));
return (void *)((char *)ret + sizeof (__cxa_refcounted_exception));
}
extern "C" void
__cxxabiv1::__cxa_free_exception(void *vptr) _GLIBCXX_NOTHROW
{
char *ptr = (char *) vptr - sizeof (__cxa_refcounted_exception);
if (emergency_pool.in_pool (ptr))
emergency_pool.free (ptr);
else
free (ptr);
}
[multiple changes] 2008-08-23 Paolo Carlini <paolo.carlini@oracle.com> * testsuite/lib/libstdc++.exp (check_v3_target_atomic_builtins): Add. * testsuite/lib/dg-options.exp (dg-require-atomic-builtins): Likewise. * testsuite/18_support/exception_ptr/current_exception.cc: Use it. * testsuite/18_support/exception_ptr/rethrow_exception.cc: Likewise. * testsuite/18_support/exception_ptr/lifespan.cc: Likewise. 2008-08-23 Sebastian Redl <sebastian.redl@getdesigned.at> Add (again) exception propagation support as per N2179. Feature is available only when _GLIBCXX_ATOMIC_BUILTINS_4 is defined. * libsupc++/exception_ptr.h (exception_ptr, current_exception, copy_exception, rethrow_exception): New file, implement exception propagation. * libsupc++/eh_ptr.cc (exception_ptr, current_exception, rethrow_exception, __gxx_dependent_exception_cleanup): Likewise. * libsupc++/unwind-cxx.h (__cxa_exception): Add reference count. (__cxa_dependent_exception, __cxa_allocate_dependent_exception, __cxa_free_dependent_exception, __get_dependent_exception_from_ue, __GXX_INIT_DEPENDENT_EXCEPTION_CLASS, __is_dependent_exception, __gxx_dependent_exception_class, __get_object_from_ue, __get_object_from_ambiguous_exception): Add. (__GXX_INIT_EXCEPTION_CLASS, __gxx_exception_class): Rename. (__is_gxx_exception_class): Handle dependent exceptions. * libsupc++/eh_arm.cc (__cxa_type_match): Likewise. * libsupc++/eh_call.cc (__cxa_call_unexpected): Likewise. * libsupc++/eh_personality.cc (__gxx_personality_*): Likewise. * libsupc++/eh_type.cc (__cxa_current_exception_type): Likewise. * libsupc++/eh_alloc.cc (__cxa_allocate_dependent_exception, __cxa_free_dependent_exception): Add. * libsupc++/eh_throw.cc (__gxx_exception_cleanup): Handle reference counting. * libsupc++/exception: Conditionally include exception_ptr.h. * libsupc++/Makefile.am: Register new files. * libsupc++/Makefile.in: Regenerate. * config/abi/pre/gnu.ver: Add new symbols. * testsuite/18_support/exception_ptr/current_exception.cc: Test the core functionality of current_exception(). * testsuite/18_support/exception_ptr/rethrow_exception.cc: Test the core functionality of rethrow_exception(). * testsuite/18_support/exception_ptr/lifespan.cc: Test the life span of exception objects during exception propagation. From-SVN: r139509
2008-08-23 13:28:30 +02:00
extern "C" __cxa_dependent_exception*
__cxxabiv1::__cxa_allocate_dependent_exception() _GLIBCXX_NOTHROW
[multiple changes] 2008-08-23 Paolo Carlini <paolo.carlini@oracle.com> * testsuite/lib/libstdc++.exp (check_v3_target_atomic_builtins): Add. * testsuite/lib/dg-options.exp (dg-require-atomic-builtins): Likewise. * testsuite/18_support/exception_ptr/current_exception.cc: Use it. * testsuite/18_support/exception_ptr/rethrow_exception.cc: Likewise. * testsuite/18_support/exception_ptr/lifespan.cc: Likewise. 2008-08-23 Sebastian Redl <sebastian.redl@getdesigned.at> Add (again) exception propagation support as per N2179. Feature is available only when _GLIBCXX_ATOMIC_BUILTINS_4 is defined. * libsupc++/exception_ptr.h (exception_ptr, current_exception, copy_exception, rethrow_exception): New file, implement exception propagation. * libsupc++/eh_ptr.cc (exception_ptr, current_exception, rethrow_exception, __gxx_dependent_exception_cleanup): Likewise. * libsupc++/unwind-cxx.h (__cxa_exception): Add reference count. (__cxa_dependent_exception, __cxa_allocate_dependent_exception, __cxa_free_dependent_exception, __get_dependent_exception_from_ue, __GXX_INIT_DEPENDENT_EXCEPTION_CLASS, __is_dependent_exception, __gxx_dependent_exception_class, __get_object_from_ue, __get_object_from_ambiguous_exception): Add. (__GXX_INIT_EXCEPTION_CLASS, __gxx_exception_class): Rename. (__is_gxx_exception_class): Handle dependent exceptions. * libsupc++/eh_arm.cc (__cxa_type_match): Likewise. * libsupc++/eh_call.cc (__cxa_call_unexpected): Likewise. * libsupc++/eh_personality.cc (__gxx_personality_*): Likewise. * libsupc++/eh_type.cc (__cxa_current_exception_type): Likewise. * libsupc++/eh_alloc.cc (__cxa_allocate_dependent_exception, __cxa_free_dependent_exception): Add. * libsupc++/eh_throw.cc (__gxx_exception_cleanup): Handle reference counting. * libsupc++/exception: Conditionally include exception_ptr.h. * libsupc++/Makefile.am: Register new files. * libsupc++/Makefile.in: Regenerate. * config/abi/pre/gnu.ver: Add new symbols. * testsuite/18_support/exception_ptr/current_exception.cc: Test the core functionality of current_exception(). * testsuite/18_support/exception_ptr/rethrow_exception.cc: Test the core functionality of rethrow_exception(). * testsuite/18_support/exception_ptr/lifespan.cc: Test the life span of exception objects during exception propagation. From-SVN: r139509
2008-08-23 13:28:30 +02:00
{
__cxa_dependent_exception *ret;
ret = static_cast<__cxa_dependent_exception*>
(malloc (sizeof (__cxa_dependent_exception)));
if (!ret)
ret = static_cast <__cxa_dependent_exception*>
(emergency_pool.allocate (sizeof (__cxa_dependent_exception)));
[multiple changes] 2008-08-23 Paolo Carlini <paolo.carlini@oracle.com> * testsuite/lib/libstdc++.exp (check_v3_target_atomic_builtins): Add. * testsuite/lib/dg-options.exp (dg-require-atomic-builtins): Likewise. * testsuite/18_support/exception_ptr/current_exception.cc: Use it. * testsuite/18_support/exception_ptr/rethrow_exception.cc: Likewise. * testsuite/18_support/exception_ptr/lifespan.cc: Likewise. 2008-08-23 Sebastian Redl <sebastian.redl@getdesigned.at> Add (again) exception propagation support as per N2179. Feature is available only when _GLIBCXX_ATOMIC_BUILTINS_4 is defined. * libsupc++/exception_ptr.h (exception_ptr, current_exception, copy_exception, rethrow_exception): New file, implement exception propagation. * libsupc++/eh_ptr.cc (exception_ptr, current_exception, rethrow_exception, __gxx_dependent_exception_cleanup): Likewise. * libsupc++/unwind-cxx.h (__cxa_exception): Add reference count. (__cxa_dependent_exception, __cxa_allocate_dependent_exception, __cxa_free_dependent_exception, __get_dependent_exception_from_ue, __GXX_INIT_DEPENDENT_EXCEPTION_CLASS, __is_dependent_exception, __gxx_dependent_exception_class, __get_object_from_ue, __get_object_from_ambiguous_exception): Add. (__GXX_INIT_EXCEPTION_CLASS, __gxx_exception_class): Rename. (__is_gxx_exception_class): Handle dependent exceptions. * libsupc++/eh_arm.cc (__cxa_type_match): Likewise. * libsupc++/eh_call.cc (__cxa_call_unexpected): Likewise. * libsupc++/eh_personality.cc (__gxx_personality_*): Likewise. * libsupc++/eh_type.cc (__cxa_current_exception_type): Likewise. * libsupc++/eh_alloc.cc (__cxa_allocate_dependent_exception, __cxa_free_dependent_exception): Add. * libsupc++/eh_throw.cc (__gxx_exception_cleanup): Handle reference counting. * libsupc++/exception: Conditionally include exception_ptr.h. * libsupc++/Makefile.am: Register new files. * libsupc++/Makefile.in: Regenerate. * config/abi/pre/gnu.ver: Add new symbols. * testsuite/18_support/exception_ptr/current_exception.cc: Test the core functionality of current_exception(). * testsuite/18_support/exception_ptr/rethrow_exception.cc: Test the core functionality of rethrow_exception(). * testsuite/18_support/exception_ptr/lifespan.cc: Test the life span of exception objects during exception propagation. From-SVN: r139509
2008-08-23 13:28:30 +02:00
if (!ret)
std::terminate ();
[multiple changes] 2008-08-23 Paolo Carlini <paolo.carlini@oracle.com> * testsuite/lib/libstdc++.exp (check_v3_target_atomic_builtins): Add. * testsuite/lib/dg-options.exp (dg-require-atomic-builtins): Likewise. * testsuite/18_support/exception_ptr/current_exception.cc: Use it. * testsuite/18_support/exception_ptr/rethrow_exception.cc: Likewise. * testsuite/18_support/exception_ptr/lifespan.cc: Likewise. 2008-08-23 Sebastian Redl <sebastian.redl@getdesigned.at> Add (again) exception propagation support as per N2179. Feature is available only when _GLIBCXX_ATOMIC_BUILTINS_4 is defined. * libsupc++/exception_ptr.h (exception_ptr, current_exception, copy_exception, rethrow_exception): New file, implement exception propagation. * libsupc++/eh_ptr.cc (exception_ptr, current_exception, rethrow_exception, __gxx_dependent_exception_cleanup): Likewise. * libsupc++/unwind-cxx.h (__cxa_exception): Add reference count. (__cxa_dependent_exception, __cxa_allocate_dependent_exception, __cxa_free_dependent_exception, __get_dependent_exception_from_ue, __GXX_INIT_DEPENDENT_EXCEPTION_CLASS, __is_dependent_exception, __gxx_dependent_exception_class, __get_object_from_ue, __get_object_from_ambiguous_exception): Add. (__GXX_INIT_EXCEPTION_CLASS, __gxx_exception_class): Rename. (__is_gxx_exception_class): Handle dependent exceptions. * libsupc++/eh_arm.cc (__cxa_type_match): Likewise. * libsupc++/eh_call.cc (__cxa_call_unexpected): Likewise. * libsupc++/eh_personality.cc (__gxx_personality_*): Likewise. * libsupc++/eh_type.cc (__cxa_current_exception_type): Likewise. * libsupc++/eh_alloc.cc (__cxa_allocate_dependent_exception, __cxa_free_dependent_exception): Add. * libsupc++/eh_throw.cc (__gxx_exception_cleanup): Handle reference counting. * libsupc++/exception: Conditionally include exception_ptr.h. * libsupc++/Makefile.am: Register new files. * libsupc++/Makefile.in: Regenerate. * config/abi/pre/gnu.ver: Add new symbols. * testsuite/18_support/exception_ptr/current_exception.cc: Test the core functionality of current_exception(). * testsuite/18_support/exception_ptr/rethrow_exception.cc: Test the core functionality of rethrow_exception(). * testsuite/18_support/exception_ptr/lifespan.cc: Test the life span of exception objects during exception propagation. From-SVN: r139509
2008-08-23 13:28:30 +02:00
memset (ret, 0, sizeof (__cxa_dependent_exception));
return ret;
}
extern "C" void
__cxxabiv1::__cxa_free_dependent_exception
(__cxa_dependent_exception *vptr) _GLIBCXX_NOTHROW
[multiple changes] 2008-08-23 Paolo Carlini <paolo.carlini@oracle.com> * testsuite/lib/libstdc++.exp (check_v3_target_atomic_builtins): Add. * testsuite/lib/dg-options.exp (dg-require-atomic-builtins): Likewise. * testsuite/18_support/exception_ptr/current_exception.cc: Use it. * testsuite/18_support/exception_ptr/rethrow_exception.cc: Likewise. * testsuite/18_support/exception_ptr/lifespan.cc: Likewise. 2008-08-23 Sebastian Redl <sebastian.redl@getdesigned.at> Add (again) exception propagation support as per N2179. Feature is available only when _GLIBCXX_ATOMIC_BUILTINS_4 is defined. * libsupc++/exception_ptr.h (exception_ptr, current_exception, copy_exception, rethrow_exception): New file, implement exception propagation. * libsupc++/eh_ptr.cc (exception_ptr, current_exception, rethrow_exception, __gxx_dependent_exception_cleanup): Likewise. * libsupc++/unwind-cxx.h (__cxa_exception): Add reference count. (__cxa_dependent_exception, __cxa_allocate_dependent_exception, __cxa_free_dependent_exception, __get_dependent_exception_from_ue, __GXX_INIT_DEPENDENT_EXCEPTION_CLASS, __is_dependent_exception, __gxx_dependent_exception_class, __get_object_from_ue, __get_object_from_ambiguous_exception): Add. (__GXX_INIT_EXCEPTION_CLASS, __gxx_exception_class): Rename. (__is_gxx_exception_class): Handle dependent exceptions. * libsupc++/eh_arm.cc (__cxa_type_match): Likewise. * libsupc++/eh_call.cc (__cxa_call_unexpected): Likewise. * libsupc++/eh_personality.cc (__gxx_personality_*): Likewise. * libsupc++/eh_type.cc (__cxa_current_exception_type): Likewise. * libsupc++/eh_alloc.cc (__cxa_allocate_dependent_exception, __cxa_free_dependent_exception): Add. * libsupc++/eh_throw.cc (__gxx_exception_cleanup): Handle reference counting. * libsupc++/exception: Conditionally include exception_ptr.h. * libsupc++/Makefile.am: Register new files. * libsupc++/Makefile.in: Regenerate. * config/abi/pre/gnu.ver: Add new symbols. * testsuite/18_support/exception_ptr/current_exception.cc: Test the core functionality of current_exception(). * testsuite/18_support/exception_ptr/rethrow_exception.cc: Test the core functionality of rethrow_exception(). * testsuite/18_support/exception_ptr/lifespan.cc: Test the life span of exception objects during exception propagation. From-SVN: r139509
2008-08-23 13:28:30 +02:00
{
if (emergency_pool.in_pool (vptr))
emergency_pool.free (vptr);
[multiple changes] 2008-08-23 Paolo Carlini <paolo.carlini@oracle.com> * testsuite/lib/libstdc++.exp (check_v3_target_atomic_builtins): Add. * testsuite/lib/dg-options.exp (dg-require-atomic-builtins): Likewise. * testsuite/18_support/exception_ptr/current_exception.cc: Use it. * testsuite/18_support/exception_ptr/rethrow_exception.cc: Likewise. * testsuite/18_support/exception_ptr/lifespan.cc: Likewise. 2008-08-23 Sebastian Redl <sebastian.redl@getdesigned.at> Add (again) exception propagation support as per N2179. Feature is available only when _GLIBCXX_ATOMIC_BUILTINS_4 is defined. * libsupc++/exception_ptr.h (exception_ptr, current_exception, copy_exception, rethrow_exception): New file, implement exception propagation. * libsupc++/eh_ptr.cc (exception_ptr, current_exception, rethrow_exception, __gxx_dependent_exception_cleanup): Likewise. * libsupc++/unwind-cxx.h (__cxa_exception): Add reference count. (__cxa_dependent_exception, __cxa_allocate_dependent_exception, __cxa_free_dependent_exception, __get_dependent_exception_from_ue, __GXX_INIT_DEPENDENT_EXCEPTION_CLASS, __is_dependent_exception, __gxx_dependent_exception_class, __get_object_from_ue, __get_object_from_ambiguous_exception): Add. (__GXX_INIT_EXCEPTION_CLASS, __gxx_exception_class): Rename. (__is_gxx_exception_class): Handle dependent exceptions. * libsupc++/eh_arm.cc (__cxa_type_match): Likewise. * libsupc++/eh_call.cc (__cxa_call_unexpected): Likewise. * libsupc++/eh_personality.cc (__gxx_personality_*): Likewise. * libsupc++/eh_type.cc (__cxa_current_exception_type): Likewise. * libsupc++/eh_alloc.cc (__cxa_allocate_dependent_exception, __cxa_free_dependent_exception): Add. * libsupc++/eh_throw.cc (__gxx_exception_cleanup): Handle reference counting. * libsupc++/exception: Conditionally include exception_ptr.h. * libsupc++/Makefile.am: Register new files. * libsupc++/Makefile.in: Regenerate. * config/abi/pre/gnu.ver: Add new symbols. * testsuite/18_support/exception_ptr/current_exception.cc: Test the core functionality of current_exception(). * testsuite/18_support/exception_ptr/rethrow_exception.cc: Test the core functionality of rethrow_exception(). * testsuite/18_support/exception_ptr/lifespan.cc: Test the life span of exception objects during exception propagation. From-SVN: r139509
2008-08-23 13:28:30 +02:00
else
free (vptr);
}